公开(公告)号：US20150295560A1

公开(公告)日：2015-10-15

申请号：US14251297

申请日：2014-04-11

Applicant: QUALCOMM Incorporated

Inventor： Dipti Ranjan PAL ,  Paul Ivan PENZES ,  Wai Kit SIU

IPC: H03K3/012 ,  G11C19/34 ,  H03K3/037

CPC classification number: H03K3/012 ,  G01R31/318536 ,  G01R31/318541 ,  G01R31/318594 ,  G11C19/34 ,  H03K3/0375

Abstract: A first apparatus includes at least one scan chain. Each of the at least one scan chain includes scan cells coupled together. Each scan cell in the at least one scan chain includes a first type of scan cell when a reset state of the scan cell is a first state, and a second type of scan cell when the reset state of the scan cell is a second state. One or more scan chains of the at least one scan chain includes at least one of the first type of scan cell and at least one of the second type of scan cell. A second apparatus includes first and second sets of scan chains including flip-flops without both set and reset functionality. Each of the flip-flops in the first and second sets of scan chains has a reset state of a first state and a second state, respectively.

Abstract translation: 第一装置包括至少一个扫描链。 所述至少一个扫描链中的每一个包括耦合在一起的扫描单元。 当扫描单元的复位状态是第一状态时，至少一个扫描链中的每个扫描单元包括第一类型的扫描单元，当扫描单元的复位状态是第二状态时，包括第二类型的扫描单元。 所述至少一个扫描链的一个或多个扫描链包括所述第一类型的扫描单元和所述第二类型的扫描单元中的至少一个。 第二装置包括第一和第二组扫描链，包括没有设置和复位功能的触发器。 第一组扫描链和第二组扫描链中的每个触发器分别具有第一状态和第二状态的复位状态。